{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-103021", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-29T21:13:24.031Z", "datePublished": "2026-11-05T20:06:36.954Z", "dateUpdated": "2026-11-05T20:06:36.954Z"}, "containers": {"cna": {"title": "OpenEMR: Username Enumeration via Pre-Authentication User Settings Loading", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-203", "lang": "en", "description": "CWE-203: Observable Discrepancy", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-208", "lang": "en", "description": "CWE-208: Observable Timing Discrepancy", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff"}, {"name": "https://github.com/openemr/openemr/pull/13133", "tags": ["x_refsource_MISC"], "url": "https://github.com/openemr/openemr/pull/13133"}, {"name": "https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5", "tags": ["x_refsource_MISC"], "url": "https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5"}, {"name": "https://github.com/openemr/openemr/releases/tag/v8_3_0", "tags": ["x_refsource_MISC"], "url": "https://github.com/openemr/openemr/releases/tag/v8_3_0"}], "affected": [{"vendor": "openemr", "product": "openemr", "versions": [{"version": ">= 6.0.0, < 8.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-05T20:06:36.954Z"}, "descriptions": [{"lang": "en", "value": "OpenEMR is a free and open source electronic health records and medical practice management application. From 6.0.0 until 8.3.0, interface/globals.php uses the unauthenticated authUser login parameter to populate temp_authuserid and load that account's user_settings before authentication succeeds. Existing usernames can therefore cause an additional database query and may apply visible customized settings, while nonexistent usernames skip that behavior. A remote unauthenticated actor can use timing or page differences to enumerate valid accounts for later credential attacks. This issue is fixed in version 8.3.0."}], "source": {"advisory": "GHSA-rr38-hpxq-wwff", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "openemr", "vendor": "openemr", "versions": [{"status": "affected", "version": ">= 6.0.0, < 8.3.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenEMR is a free and open source electronic health records and medical practice management application. From 6.0.0 until 8.3.0, interface/globals.php uses the unauthenticated authUser login parameter to populate temp_authuserid and load that account's user_settings before authentication succeeds. Existing usernames can therefore cause an additional database query and may apply visible customized settings, while nonexistent usernames skip that behavior. A remote unauthenticated actor can use timing or page differences to enumerate valid accounts for later credential attacks. This issue is fixed in version 8.3.0."}], "id": "CVE-2026-103021", "lastModified": "2026-11-05T20:17:38.033", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-05T20:17:38.033", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5"}, {"source": "security-advisories@github.com", "url": "https://github.com/openemr/openemr/pull/13133"}, {"source": "security-advisories@github.com", "url": "https://github.com/openemr/openemr/releases/tag/v8_3_0"}, {"source": "security-advisories@github.com", "url": "https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-203"}, {"lang": "en", "value": "CWE-208"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.0.0,8.3.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "openemr", "source": "cna", "vendor": "openemr"}, "product": "openemr", "vendor": "openemr"}], "created": "2026-11-05T21:30:17.955253+00:00", "updated": "2026-11-05T21:45:04.830532+00:00", "vendors": ["openemr", "openemr$PRODUCT$openemr"]}